Addition
10+10
20
20-20
1 ten + 2 tens = ___ tens
3 tens
3 tens - 1 ten = ____ tens
Sally had 10 stickers. She gave 10 to Jack. How many does she have now?
20+30
50
40-30
10
4 tens + 1 ten = ___ tens
5 tens
5 tens - 3 tens = ____ tens
2 tens
Morgan had 20 beads and Lily gave her 20 more. How many does she have now?
40+20
60
50-20
30
3 tens + 4 tens = ___ tens
7 tens
6 tens - 2 tens = ____ tens
4 tens
Bobby had 60 pokemon cards but he gave 30 to his friend. How many does he have now?
30
50+30
80
70-50
20
4 tens + 5 tens = ___ tens
7 tens - 6 tens = ____ tens
1 ten
Jake had 50 rocks in his rock collection and he got 30 more for his birthday. How many does he have now?
80
60+40
90-40
8 tens + 2 tens =
10 tens/1 hundred
9 tens - 5 tens = ____ tens
4 tens
Sarah had 100 emoji keychains but she gave 30 to her friends. How many does she have now?
70